There are SIX equilateral triangles in a regular hexagon
Answer:
x = -9
Step-by-step explanation:
The top angle would be 90 degrees due to the square.
The angles of a triangle add up to 180 degrees.
Set up the equation:
90 + 45 + x + 54 = 180
189 + x = 180
Subtract 189 from both sides:
x = -9
Now, if you need to solve for the angle, just plug x in:
-9 + 54 = 45 degrees
(In your case it is just looking for x so it would be x = -9)
Answer:
-49
Step-by-step explanation:
Reduce the expression, if possible, by cancelling the common factors.
Answer: The required number of arrangements is 1000.
Step-by-step explanation: We are given to find the number of arrangements of 3 digits that can be formed from the digits 0 to 9.
Since we are talking about the 3 digit arrangements, not the 3 digit numbers,
so we have 10 options 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 for each of the three places in the arrangement.
Therefore, the number of 3 digit arrangements that can be formed is given by

Thus, the required number of arrangements is 1000.
Probably D because it started out as negative and then kept going up to positive